Ninh Binh prov., Nho Quan district, Cuc Phuong national park, around point 20°15'03.6"N 105°41'58.7"E (N20 15 03.6 E105 41 58.7), at elev. about 165 m a.s.l., scattered in closed evergreen broad-leaved lowland secondary forests at the base of limestone hill. Perennial herb with rhizome, inflorescence about 15-20 cm, flower pale white-green. Common

9 December 2014, Nguyen Sinh Khang NSK 760.

Clonotype. Flowered and collected in 14 10 2021 by L. Averyanov and T. Maisak from plants used foir preparation of holotype NSK 760. Garden number 13276.